how to trigger "something" when the same item is being selected again in combobox

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Issue with SelectionChanged event: If the user choose the same item as the item is currently being selected then the selection is not changed and therefore this event will not be triggered.

What other event handler(or other ways) I may use to issue an event regardless of the selected item is changed or not as long as the mouse clicked on that item and that item is being selected.

Scenario: Select an item in combobox it will trigger some function.And then again, open combobox and select same item as previously selected and it has to trigger the function again.

I am currently using SelectionChanged event attached Behaviour in MVVM and my combobox is inside the gridview column.

Posted 13-Jun-14 0:41am

chankayudu

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Tadit Dash (ତଡିତ୍ କୁମାର ଦାଶ) 13-Jun-14 7:40am

Ideally it should not. If you don't change anything, why it would be fired? If it is already fired, then the work you wanted to do is already done. So, no need to do that again an again for the same option, right?

chankayudu 13-Jun-14 8:45am

Thank for quick response.

Actually my scenario is ,
1) I have combobox which contains two items "value" and "By Rule".
2) Whenever user selects "By Rule" it will open new window, and i will perform some operations in that window.
3) The data related to those operations will get saved in xml then the window gets closed.
4) If i changed the selected item to "value" in combobox the data in xml will be deleted.
5)So, without deleting the data in the xml i need to open the window again by selecting the combobox item "By Rule" which will show the saved data.

I tried to add button so that if the combobox item is "By Rule" i will click button it will open the window with previous data but user is not agreed to it.

Now i need the way to trigger the window whenever i selected "By Rule".

Tadit Dash (ତଡିତ୍ କୁମାର ଦାଶ) 13-Jun-14 10:21am

I would suggest you to replace the ComboBox with two Buttons, which is a better and cleaner approach. There is no need to have a ComboBox here, as it does not include many items.

chankayudu 13-Jun-14 15:30pm

Thank you for your solution.

sorry i gave wrong example. I have many value items and one "By Rule" which is will opens the window and this combo box is inside a grid view cell.

Tadit Dash (ତଡିତ୍ କୁମାର ଦାଶ) 13-Jun-14 23:12pm

Look, this can't be possible with change event of ComboBox. Either add number of buttons for number of items, else open one popup from the cell and show all items as buttons. You have to think of a way which would fire the function every time and change event cannot do that for you.

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Tadit Dash (ତଡିତ୍ କୁମାର ଦାଶ) · Answer 1 · 2014-06-13T07:17:00

Solution 2

I would suggest you to replace the ComboBox with two Buttons, which is a better and cleaner approach. There is no need to have a ComboBox here, as it does not include many items.

Posted 13-Jun-14 7:17am

Tadit Dash (ତଡିତ୍ କୁମାର ଦାଶ)

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phil.o 13-Jun-14 13:34pm

I agree with you; a custom two-mutually-exclusive-buttons control would be much more manageable, as well as having the advantage of being unambiguous to the end-user.

Tadit Dash (ତଡିତ୍ କୁମାର ଦାଶ) 13-Jun-14 22:56pm

Exactly. Thanks phil.o. :)

V. · Answer 2 · 2014-06-13T01:33:00

Solution 1

Look here[^]

your best bet is to use the click event I think (although if the user uses the keyboard you might want to research that a bit) You can get the selected item from this handler as well I assume.

hope this helps.

Posted 13-Jun-14 1:33am

V.